
Work Done by a Variable Force
Interactive Video
•
Mathematics, Physics
•
9th - 12th Grade
•
Practice Problem
•
Hard
Jackson Turner
FREE Resource
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the expression for the force function given in the problem?
f(x) = 24/x^2
f(x) = 24x^3
f(x) = 24/x^3
f(x) = 24x^2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the force required to move the object change as x increases from 1 to 4?
The force first increases then decreases.
The force decreases.
The force remains constant.
The force increases.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the integral expression used to calculate the work done?
Integral from 1 to 4 of 24x^3 dx
Integral from 1 to 4 of 24/x^3 dx
Integral from 1 to 4 of 24/x^2 dx
Integral from 1 to 4 of 24x^2 dx
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the antiderivative of 24/x^3?
24x^2
-12/x^2
12/x^2
-24/x^2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the work done when x is evaluated from 1 to 4?
13 Newton meters
10.5 Newton meters
12 Newton meters
11.25 Newton meters
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the units of the work done in this problem?
Watts
Newton seconds
Joules
Newton meters
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